Shuttle.



E. F. WILMOT. SHUTTLE.

APPLICATION FILED NOV-17.1916- 1,255 ,570. Patented May 7,1918.

l2 as I 5 '8 m Fig.4.

2 2 f an lnvenTor.

Edwin F. WilmoT TTNTTEE %TATE% PATENT @FFTQTT.

EDWIN F. WILMOT, OF ALLSTON, MASSACHUSETTS, ASSIGNOR TO THE CARTON BELTING COMPANY, OF ALLSTON, MASSACHUSETTS. A CORPORATIQN OF MASSACHUSETTS.

SHUTTLE.

Specification of Letters Patent.

Patented May '2, 191%.

Application filed November 17, 1916. Serial No. 131,813.

To all whom it may concern:

Be it known that I, EDWIN F. VVILMOT, a citizen of the United States, and resident of Allston, county of Suifolk, State of Massachusetts, have invented an Improvement in Shuttles, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to an improved form of shuttle and is specifically directed to a means for causing a tensioned drag to be placed upon the filling as it is fed or travels to the delivery eye at the shuttle side from the filling mass positioned in the usual recess in the shuttle body.

The types of shuttle tension mechanisms commonly employed are not sufficiently strong and not sufficiently durable to impart the relatively powerful tension essential in weaving heavy fabrics. In the production of duck belting and similar weavings, the filling used is thick and heavy as compared to filling yarn entering into the more common loom productions. And, accordingly, there has been provided this novel and improved tension device primarily intended for incorporation in shuttles employed in the Weaving of heavy duck belting'and similar fabrics. The general structure of this tension device, a selected embodiment of which is here shown, lends itself most efiiciently to placing the requisite tensioned drag upon the relatively heavy yarn necessarily used in this Particular art. Further, to render the device more effective and efficient under varying conditions of service, a wide range of tension adjustability has been assured. And, while the device is designed specifically for heavy work in this art, it is understood that it may readily subserve its function in the more common loom productions.

The object of this invention is to provide an improved shuttle.

A more specific object is to produce an improved shuttle tension.

Other objects of the invention will more fully appear from the following description and the accompanying drawings and will be pointed out in the annexed claims.

In the accompanying drawings, there has been disclosed a structure designed to carry out the objects of the invention, but it is to be understood that the invention is not confined to the exact features shown, as various changes may be made within its reasonable scope.

In the drawings:

Figural is a partial vertical section of the shuttle;

Fig. 2 is a partial horizontal section of the shuttle;

Fig. 3 is an enlarged detail of the tension device;

Fig. l is an enlarged detail of the lever.

The shuttle disclosed. in the accompanying drawings is that of the well-known corrugated type in which a spindle is not employed and, although such corrugated type is illustrated, it is to be understood that this tension mechanism may be equally employed with various shuttle types.

The drag or tension s placed upon the filling by means of a friction surface against which the filling is yieldably pressed by a member such as a lever, preferably so movably mounted as to permit of tension adjustment as desired. In the selected embodiment here disclosed, the tension device comprises a base 1, preferably metallic, thus assuring durability and wearing qualities. The standards or uprights 2, which are preferably integral therewith, arise from the base 1 and support the lever 3. The lever is pivotally mounted by means of a pin 4: between the uprights. This lever 3 may be of a suitable shape to achieve its cooperative function but in this selected embodiment is shown as L-shaped and is pivotally mounted at the bend. The army 5, normally substantially parallel to the uprights 2, extends through an aperture 6 in the base 1. The portion of the base 1 which is adjacent and opposite the lower portion of the arm 5 is provided with a surface 7 against which the adjacent surface 8 of the arm 5 is adapted to press the filling 9 and thus frictionally to detain or place a drag upon the filling as it moves past these friction surfaces in its travel from the filling mass 10 in the shuttle regess to the delivery eye 11 at the shuttle si e.

Provision is made in this embodiment whereby the arm 5 is yieldably held adjacent the friction surface of the base. For this purpose, a construction is employed which is capable of holding this arm against the friction surface with considerable tension that the heavy filling which passes over the face of the friction surface may have imparted thereto the requisite drag. The base portion 12, which will be characterized as the base rear portion, is apertured and therein is received in threaded engagement the set screw 13. This screw is inserted in an aperture 1n the bottom of the shuttle. The upper face of the set screw 13 carries a helical spring 14: coiled about the terminal reduced portion 15 of the set screw. This spring 141- is preferably composed of fairly stifi wire stock although, obviously, for use with other filling, a spring weaker than that illustrated may be employed. The upper terminus of the spring 14 is coiled about the, stud 16 which is secured to the underface of the other arm 17 of the L-shaped lever 3. This spring functions normally upwardly to push the arm 17 and hence rearwardly to push the filling-engaging portion or surface of'the arm 5 constituting the other part of the lever 3.

Adjustment of the upward thrust of the helical spring 141 is accomplished by turning the screw 13 in the requisite direction. Contraction or extension of this spring is easily efiected by the use of a screw-driver or other instrumentality engaging the slotted head of the screw. In the employment of a spring of the type shown and described in this selected embodiment, it is preferable that provision be made whereby this spring adjustment screw 13 may be locked in the desired position. To this end the adjustment screw 13 is longitudinally grooved, four grooves 18 being here shown. The set screw 19 is received in threaded engagement in an aperture in the shuttle side and its pointed tip, entering one of the grooves 18 as shown in Fig. 2, effectively locks the adjustment screw against movement. In the travel of the shuttle, the filling is intermittently run out with more or less rapidity andit is preferableto have an efficient medium to guide the filling from the yarn mass to the frictional tension device. In this embodiment, the forward portion of the base 1 has an aperture 20 providing a filling passage through which the filling is threaded and thus directly guided from the mass 10. Preferably, the lever arm 5 is provided with cooperating filling-guiding means. In this embodiment, the arm 5 has a reduced portion which projects through the aperture 6 of the base 1. This'reduced'portion terminates at its upper limit as shown in Fig. 41 in a recess or notch 21. This notch 21 is in substantial alinement with the filling pas sage 20 of the base and cooperates therewith to guide the filling in its travel from the filling mass 10 between the friction surfaces 7 and 8 to the delivery eye at the shuttle side. The reduced portion of the arm 5 facilitates and aids in the threading of the filling and itslextension through the base aperture prevents accidental unthreading, for, if the arm 5 were not reduced, it would be diificult in threading and in operation for the filling to pass between the longitudinal side of the arm and the adjacent faceof the opening in the base 1 as clearly shown in Fig. 4. The filling is led from the mass 10 and is threaded through the passage 20 of the base, then down through the base aperture 6, around the reduced terminal of the arm 5 which projects through the base aperture 6 and upwardly through the aperture, thence out: through the delivery eye to the shuttle side as shown in Fig. 2. Upon pulling its end, the filling, thus looped about the projecting reduced terminal, rides up the two sides of the" arm 5 and assumes the position in which the entrant filling seats in and travels through the notch 21. The filling position then assumed is one in which it passes behind the yieldably pressed arm 5 by which the filling is held against the frictional surface 7 of the base and directly to the delivery eye.

lVhile the parts of this tension device may be made in various shapes and modes to achieve its novel function, it has been found preferable to produce the base, with its front and rear apertured port-ions and the uprights, out of an integral casting, insuring durabilitv, uniform coiiperation of parts and materiallv reducing production costs.

And, while this particular corrugated shuttle and filling adapted for use in weaving very heavy material, is shown, it is understood that the construction disclosed herein is illustrative but not restrictive and that the same may be modified within the meaning and scope of the claims which follow.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A filling tension device, adapted to be positioned in a shuttle body recessed'to receive the device and a filling mass, and comprising a base, a member carried by said base, and tension means carried by the base and reacting upon said member tojcause a portion thereof to be yieldably held against a portion of the base thereby to cause a frictional drag to be given to filling led between said base portion and member.

2. A filling tension device, adapted to be positioned in a shuttle body recessed to receive the device and a filling mass, and comprising a base, a member carried by said base, tensionmeans carried by the base "and reacting-upon said member to cause a portion thereof to be yieldably held against a portion of the basethereby to cause-a frictional drag to be givento filling led between said base portion and member, and a; filling passage provided by an opening in the forward portion of the baseto guideY-filling fromthe mass to said portion of the member.

3. A filling tension device, adapted to be positioned in a shuttle body recessed to receive the device and a filling mass, and comprising a base, a member carried by the base and having a portion adapted to bear against a portion of said base, a filling guiding means formed on said bearing portion of the member and adapted to guide filling from the mass to said base and member bearing portions, and tension means acting upon said member to cause a yieldable frictional drag to be given to filling led between said member and base portions.

4:. A filling tension device, adapted to be positioned in a shuttle body recessed to receive the device and a filling mass, and comprising a base, the base being provided with an opening, a member carried by said base, said member having a reduced portion extending in said opening, and tension means acting upon said member to cause its reduced portion to be yieldably held against a portion of the base thereby to cause a frictional drag to be given to filling led between said base portion and member, said reduced portion aiding the threading of the filling between the member and base portion and the extension of the member in the opening preventing accidental unthreading.

5. A filling tension device, adapted to be positioned in a shuttle body recessed to receive the device and a filling mass, and comprising a base, the base being with an opening, a member carried by the base, said memher having a reduced portion extending in said opening and adapted to bear against a portion of the base, a filling guiding means formed on said member to guide filling from the mass to said base and member bearing portions, and tension means acting upon said member to cause its reduced portion to be yieldably held against said base portion thereby to place a frictional drag upon filling led between said bearing portions, said reduced portion aiding the threading of the filling between said i caring portions and the extension of the member in the opening preventing accidental unthreading.

In testimony hereof, I have signed my name to this specification.

EDWIN F. WILMOT.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Wellington, D- Q. 

